[pjmlp]

My amd64 and ARM CPUs also don't have it.

On languages where the algorithm is an implementation detail, one can make use of reference counting with a cycle collector, which are just a few hundred lines.

Implementing one is pretty simple, making it perform well is another matter.

[hajile]

Unlike your real processor though, you can't directly access memory or ensure its absolute location. You can make an advanced GC that is slow or a basic one that is not.